Ordinary paper sleeve thikness is not enough to protect against hot surface and it has got only one way to hold the cup. Need to fill hot drink into two cups or make double layers to prevent hot. The reason why companies keep making thinner sleeve is for saving money. So, need to find a way to make sleeves with less hot, new style and to use recycled materials to reduce cost. This muggie Coffee Sleeve overcomes all these problems. Muggie designed by Kyu Seop Lee.